JP5693437B2 - Arm mounting bracket - Google Patents

Description

  The present invention relates to an arm mounting bracket for mounting a signal device such as a vehicular lamp or a pedestrian lamp, a road guide plate, a sign plate, and the like via an arm member on a substantially columnar or cylindrical column.

  Attached to both sides of the base end of the arm member as arm mounting brackets for mounting a traffic light such as a vehicular lamp or pedestrian lamp, a road guide board, a sign board, etc. via an arm member to the support A pair of metal fittings and one end are connected to the pair of metal fittings, and the other end is connected to a column by a column clamping bolt, and is fixed to the column by the pair of metal fittings and the clamping band. (For example, see Patent Documents 1 and 2).

JP-A-2005-6411 Japanese Patent No. 3387910

  By the way, traffic lights such as vehicular lamps and pedestrian lamps, road guide boards, sign boards, etc. are installed at high places on the columns and the wind receiving area is relatively large, so they are supported by wind pressure. The arm member is trying to rotate with respect to the column, or it is violated by vibration. For this reason, the bolts and nuts holding the arm mounting bracket may be loosened, and the signal device, road guide plate, signboard, etc. may rotate, and it is necessary to check the tightening condition of the arm mounting bracket regularly. In addition, it is desired that the arm mounting bracket, the arm member, the signal device and the like are not rotated as much as possible with respect to the support column.

  However, in the conventional arm mounting bracket described in Patent Document 1 described above, the contact surfaces of the pair of bracket main bodies and the fastening band struts have a structure that is simply curved according to the diameter of the struts. Because it depends on the magnitude of the tightening force, the upper limit of the bolt tightening force and the performance as a means to solve problems such as rotation, vibration, loosening, etc. of the arm mounting bracket, arm member, signal device, etc. are the same. There was a trend. In addition, in the arm mounting bracket described in Patent Document 2, a fastening band (first band piece) of the arm mounting bracket is provided with a protruding edge with a rounded tip to reduce the contact resistance with the column (electric pole), and wind pressure Rather it was trying to rotate.

  Therefore, the present invention provides an arm mounting bracket capable of preventing rotation even if a signal device, a road guide plate, a sign plate, or the like attached to the tip of an arm member tries to rotate under the influence of wind such as wind pressure. The purpose is to do.

In order to solve the above problems, the arm mounting bracket of the present invention is an arm mounting bracket for mounting an arm member on a substantially columnar or cylindrical column, and is mounted on both side surfaces of the base end of the arm member, respectively. A pair of bracket main bodies having a column facing edge that abuts against the outer peripheral surface of the column, and one end connected to the pair of bracket main bodies, while the other end has a pair of tightening bands tightened by a column clamping bolt. Each of the pair of metal fittings includes an upper surface, a lower surface, and a relay side surface between the upper side surface and the lower side surface. A plurality of bolt holes in the longitudinal direction are fastened and fixed by arm tightening bolts via bolt holes. Whereas the radius of the inner peripheral surface of the portion provided is smaller than the predetermined radius of the outer peripheral surface of the arm member, the radius of the inner peripheral surface of the portion provided with other bolt holes is the outer peripheral surface of the arm member Are formed in the vicinity of the bolt holes on the side close to the pillars, and are formed so as to be spaced apart from the outer peripheral surface of the arm member. The opposing edge is provided with a plurality of corners, and when attached to the column, the plurality of corners abut on the outer peripheral surface of the column.

In the arm mounting bracket of the present invention, the radius of the inner peripheral surface of the portion of the plurality of bolt holes on each relay side surface of the pair of bracket main bodies where the bolt hole on the side close to the support is provided is the outer periphery of the arm member. Since the recessed part which is smaller than the predetermined radius of the surface and is raised so as to be separated from the outer peripheral surface of the arm member is formed around the bolt hole on the side close to the column, the strength and rigidity around the bolt hole on the side close to the column The strut tightening bolt can be tightened strongly. In addition, the recess around the bolt hole on the side close to the pillar does not lift up from the outer peripheral surface of the arm member and does not come into contact with it, so even if the arm itself is deformed by tightening the arm tightening bolt with a stronger tightening force, Since it is not deformed, it can be tightened with a force larger than that around the other bolt holes, and vibration and loosening of the entire arm mounting bracket can be effectively suppressed. In addition, the dent does not lift from the outer peripheral surface of the arm member and absorbs vibrations from the arm member due to its curved shape, so that vibrations from the arm member are transmitted to the tightening band via the bracket body. Thus, vibration and loosening of the entire arm mounting bracket can be effectively suppressed.
Also, a plurality of corners are provided on the strut-facing edges of the upper and lower sides of the pair of metal fittings, and when the arm mounting bracket is attached to the strut, the plurality of corners are the outer peripheral surfaces of the struts. The arm mounting bracket, the arm member, the signal device, the sign plate, and the like can be prevented from rotating with respect to the column. In addition, the corner is provided not on the fastening band side but on the metal fitting body side to which an object that is susceptible to wind resistance such as an arm member, a signal device, or a sign plate is fixed. In order to prevent vibration and external force from being transmitted to the fastening band side where the fastening bolts are installed on the support pillars by stopping vibrations and external forces at multiple corners, the rotation, vibration and loosening of the arm mounting brackets are also effectively suppressed. can do.

It is a figure which shows the usage example of the arm attachment metal fitting concerning this invention which made the pedestrian lamp device an example. It is a perspective view of the arm attachment metal fitting concerning this invention. (A), (b) is the top view and front view which respectively show the state which fixed the arm mounting bracket concerning this invention to the support | pillar. It is a perspective view of a fastening band. (A)-(d) is the front view, bottom view, AA sectional view, and BB sectional view of a fastening band, respectively. It is a perspective view of a metal fitting main body. (A)-(c), respectively are the front view, CC line sectional drawing, and DD line sectional drawing of a metal fitting main body. It is a figure which shows the usage example of the arm mounting bracket concerning this invention which made the vehicle lamp device an example.

  Hereinafter, embodiments of an arm mounting bracket according to the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing an example of use of an arm mounting bracket 1 according to the present invention using a pedestrian lamp 4 as an example. As shown in FIG. 1, the arm mounting bracket 1 is a bracket for mounting the arm member 3 to a substantially columnar or cylindrical column 2, and is opposite to the column 2 in the arm member 3, that is, the tip of the arm member 3. Here, a pedestrian lamp 4 and a sign board 5 are attached to the side. In FIG. 1, 51 is a lamp mounting bracket, 52 is a sign plate mounting bracket, 53 is a hanging bracket, 54 is a support rod, and 55 is a free band. Omitted.

  2 is a perspective view of the arm mounting bracket 1 according to the present invention, and FIGS. 3A and 3B are a plan view and a front view showing a state in which the arm mounting bracket 1 according to the present invention is fixed to the support column 2, respectively. FIG.

  As shown in FIGS. 2 and 3, the arm mounting bracket 1 includes a pair of bracket main bodies 11 and 11 and a pair of tightening bands 12 and 12. The pair of metal fittings 11 and 11 are respectively attached to both side surfaces of the base end of the arm member 3, and are connected to the pair of fastening bands 12 and 12 on the opposite side, together with the pair of fastening bands 12 and 12. The support 2 is clamped and fixed. The pair of tightening bands 12 are respectively connected to the pair of metal fittings 11, 11, while the other end is fastened via a column fastening bolt 13 a, a nut 13 b, and a washer 13 c, and the column 2 together with the pair of metal fittings 11. The outer peripheral surface of is tightened and fixed. As a result, when the column tightening bolt 13a and the nut 13b are tightened, the outer peripheral surface of the column 2 is provided with corners 11a11, 11a12 and corners of the upper side surface 11a and the lower side surface 11b of a pair of metal fittings 11, 11 described later. 11b11, 11b12 and the bases 12a22, 12b22 of the connection side upper side surface 12a2 and the connection side lower side surface 12b2 of the pair of tightening bands 12, 12 are in strong contact with each other.

  2 and 3, 14a and 15a are arm clamping bolts, 14b and 15b are nuts, 14c and 15c are washers, 16a is a pair of metal fittings 11 and 11 and a pair of clamping bands 12 and 12, respectively. Band connecting bolts, 16b is a nut, and 16c is a washer. These are well-known and will not be described. In the description of the present embodiment, for convenience of explanation, the arm member 3 and the pair of metal fittings 11 and 11 are bolted at two locations. However, of course, at least three locations may be used in the present invention.

  Next, the pair of fastening bands 12 will be described in detail. However, since the pair of tightening bands 12 and 12 are the same, only one of the tightening bands 12 will be illustrated and described in detail. 4 is a perspective view of the fastening band 12, and FIGS. 5A to 5D are a front view, a bottom view, a cross-sectional view taken along line AA, and a cross-sectional view taken along line BB, respectively.

  As shown in FIGS. 4 and 5, the fastening band 12 includes a main body side upper side surface 12a1, a connection side upper side surface 12a2, a main body side lower side surface 12b1, a connection side lower side surface 12b2, and a relay side surface 12c therebetween. It consists of. As shown in FIGS. 5A and 5C, the main body side upper side surface 12a1 and the main body side lower side surface 12b1 are banded in the through holes 11a2 and 11b2 (see FIG. 7) of the metal fitting body 11 on the corresponding side. Through holes 12a11 and 12b11 are provided for connection via a connection bolt 16a (see FIG. 3). The shape of the tightening band 12 is an example. For example, when the main body side upper side surface 12a1 and the main body side lower side surface 12b1 are not provided, one end of the relay side surface 12c is folded and welded to the cylindrical portion at one end. May be provided, and the cylindrical portion and the through holes 11a2 and 11b2 of the metal fitting body 11 may be connected through the band connecting bolt 16a. In this case, the cylindrical portion provided by folding back one end of the relay side surface 12c corresponds to the through holes 12a11 and 12b11. On the other hand, a square bolt hole 12c1 is provided between the connecting side upper side surface 12a2 and the connecting side lower side surface 12b2 in the relay side surface 12c, as shown in FIGS. A bolt 13a (see FIG. 3) is inserted and tightened to fix the arm mounting bracket 1 to the column 2.

  The column-facing edge portions 12a21 and 12b21 facing the column 2 on the connection side upper side surface 12a2 and the connection side lower side surface 12b2 are each formed in an arc shape with substantially the same radius as the radius of the outer peripheral surface of the column 2. The fastening band 12 connected to the metal fitting body 11 is fastened by the support bolts 13a inserted into the square bolt holes 12c1 and fixed to the support 2 so that the connection side upper surface 12a2 and the connection side lower surface 12b2 are mainly used. The base portions 12a22, 12b22 near the center strongly contact the outer peripheral surface of the support column 2.

  Next, a pair of metal fitting bodies 11 and 11 constituting the band fastening metal fitting 1 of this embodiment will be described in detail. However, since a pair of metal fitting bodies 11 and 11 are the same, only one metal fitting body 11 is illustrated and explained in detail. FIG. 6 is a perspective view of the metal fitting body 11, and FIGS. 7A to 7C are a front view, a CC sectional view, and a DD sectional view of the fitting main body 11, respectively.

  As shown in FIGS. 6 and 7, the metal fitting body 11 includes an upper side surface 11a, a lower side surface 11b, and a relay side surface 11c between the upper side surface 11a and the lower side surface 11b.

  The upper side surface 11a and the lower side surface 11b are connected to the upper side surface 12a1 of the fastening band 12 and the through holes 12a11, 12b11 of the lower side surface 12b1 of the main body through band connecting bolts 16a (see FIG. 3), respectively. Through holes 11a2 and 12b2.

  The relay side surface 11c has a plurality of bolt holes in the longitudinal direction of the arm member 3 while sandwiching the arm member 3 (here, for convenience of explanation, the number is two, but the number is not limited to two). The arm clamping bolts 14a and 15a, nuts 14b and 15b, and washers 14c and 15c are tightened and fixed via 11c1 and 11c2. Accordingly, the radius of the inner peripheral surface of the relay side surface 11 c is substantially the same as the radius of the outer peripheral surface of the arm member 3. For example, if the diameter of the outer peripheral surface of the arm member 3 is 60.5 mm, that is, its radius is 30.25 mm, the radius of the inner peripheral surface of the relay side surface 11c is approximately half, 30 mm.

  Here, the pillar opposing edge portion 11a1 of the upper side surface 11a of the metal fitting body 11 and the column opposing edge portion 11b1 of the lower side surface 11b are respectively cut by arcs having different radii such as a radius of 7 mm, 30 mm, and 50 mm. As a result, a plurality of corner portions 11a11, 11a12 and corner portions 11b11, 11b12 (here, two locations are provided for convenience of explanation but may be two or more in the present invention) are arranged on the outer periphery of the support column 2. It is provided in accordance with the diameter of the outer peripheral surface of the support column 2 so as to contact the surface.

  Therefore, when the arm mounting bracket 1 is attached to the column 2, the corners 11a11 and 11a12 and the corners 11b11 and 11b12 are provided at the column facing edges 11a1 and 11b1 of the upper side surface 11a and the lower side surface 11b, respectively. Since the arm mounting bracket 1, arm member 3, pedestrian signal device 4, etc. try to rotate with respect to the column 2 due to wind pressure or the like, the rotation is surely prevented. it can.

  In particular, the corners 11a11, 11a12 and the corners 11b11, 11b12 are not fixed to the side of the fastening band 12, but are fixed to things that are susceptible to wind resistance such as the arm member 3, the pedestrian lamp 4, and the marking plate 5. Since it is provided on the metal fitting body 11 side, the corners 11a11, 11a12 and the corner parts 11b11, 11b12 directly resist the vibration and external force transmitted to the metal fitting body 11 as compared with the case of providing on the fastening band 12 side. Thus, it is prevented from transmitting to the tightening band 12 side. Therefore, compared with the prior art, vibrations and external force from the metal fitting body 11 are applied to the tightening portions such as the band connecting bolt 16a for connecting the metal fitting body 11 and the fastening band 12, and the column fastening bolt 13a for fastening the fastening bands 12 together. Is not transmitted, and rotation, vibration, loosening, etc. of the entire arm mounting bracket 1 can be effectively suppressed.

  Further, the radius of the inner peripheral surface around the bolt hole 11c1 on the side close to the support column 2 among the plurality of bolt holes 11c1 and 11c2 in the relay side surface 11c is smaller than the predetermined radius of the outer peripheral surface of the arm member 3. On the other hand, the radius of the inner peripheral surface around the other bolt hole 11c2 is made substantially the same as the predetermined radius of the outer peripheral surface of the arm member 3, and the side closer to the support column 2 as shown in FIGS. A recess 11c3 is provided around the bolt hole 11c1. Therefore, the portion where the bolt hole 11c1 on the side close to the support column 2 is provided is raised and separated from the outer peripheral surface of the arm member 3 by the recess 11c3, as shown in FIGS. 7B and 7C. For example, if the diameter of the outer peripheral surface of the arm member 3 is 60.5 mm, that is, its radius is 30.25 mm, the radius of the inner peripheral surface around the bolt hole 11c1 on the side close to the support column 2 is 20 mm. As described above, the radius of the inner peripheral surface other than the portion where the bolt hole 11c1 is provided is set to be smaller than a predetermined radius of the outer peripheral surface, and the radius of the inner peripheral surface of the relay side surface 11c is approximately half as 30 mm. As a result, the portion provided with the bolt hole 11c1 on the side close to the support column 2 is improved in strength and rigidity by the recess 11c3 as shown in FIGS. 7A to 7C. The strut tightening bolt 13a can be tightened more strongly without being deformed, and the rotation and loosening of the entire arm mounting bracket 1 can be effectively suppressed.

  This is because the arm mounting bracket 1 supports the arm member 3 and the pedestrian lamp 4 mounted on the bracket main body 11 like a so-called cantilever, and considering their weight and wind pressure, The arm mounting bracket 1 is required to have very strong strength and rigidity, and must be fastened and fixed with a very large tightening force. In the arm mounting bracket 1, the fixing to the column 2 is fixed by the column clamping bolt 13 a and the nut 13 b on the opposite side of the bracket body 11 via the column 2, and the column clamping bolt 13 a and the nut 13 b thereof. For example, the metal fittings 11 are pulled toward the fastening band 12 via the support 2. Therefore, the metal fitting body 11 tends to expand along the outer peripheral surface of the support column 2, and a greater force is applied to the side closer to the support column 2 such as the corner portions 11 a 11, 11 a 12, and is easily deformed. In particular, in the vicinity of the bolt holes 11c1 and 11c2, the bolt holes 11c1 and 11c2 inevitably have reduced strength and rigidity. In the vicinity of the bolt hole 11c1 on the side close to the support column 2, there is no reinforcement. More likely to deform.

  Therefore, in order to strongly tighten the column tightening bolt 13a without causing deformation of the metal fitting body 11 due to wind pressure load or tensile force, it is effective to improve the strength and rigidity around the bolt hole 11c1 that is easily deformed by applying a large force. Is. Therefore, in this metal fitting body 11, by providing the recess 11c3, the strength and rigidity around the bolt hole 11c1 near the support column 2 are improved, and the support column tightening bolt 13a can be strongly tightened.

  Further, as shown in FIG. 7 (c), the recess 11c3 around the bolt hole 11c1 on the side close to the support column 2 is lifted from the outer peripheral surface of the arm member 3 and does not come into contact therewith, so that the arm tightening bolt 14a is attached with a stronger tightening force. Even if the periphery itself is deformed by tightening, the arm member 3 is not deformed. Therefore, the arm member 3 can be tightened with a force larger than that around the other bolt holes 11c2, and the entire arm mounting bracket 1 is vibrated or loosened. Can be effectively suppressed. Further, as shown in FIG. 7C, the hollow portion 11c3 is not lifted from the outer peripheral surface of the arm member 3, and further absorbs vibration or the like from the arm member 3 due to its curved shape. 3 is less likely to be transmitted to the fastening band 12 via the metal fitting body 11, and the vibration and loosening of the entire arm fitting 1 can be effectively suppressed.

  Further, in the description of the above embodiment, as shown in FIG. 1, the use example of the arm mounting bracket 1 taking the pedestrian lamp 4 as an example is shown and described. In the case of a heavy vehicle lamp 6 or the like, as shown in FIG. 8, two arm members 3 are used in the vertical direction and are respectively attached to the column 2 via the arm mounting bracket 1 of the present embodiment as described above. It can also be installed. In FIG. 8, 54 is a support rod, 55 is a free band, and 56 and 57 are steady rests, which are well known.

DESCRIPTION OF SYMBOLS 1 Arm mounting bracket 11 Bracket main body 11a Upper side surface 11b Lower side surface 11c Relay side surface 11a1, 11b1 Support | pillar opposing edge 11a11, 11a12, 11b11, 11b12 Corner | angular part 11c3 Recessed part 12 Tightening band 13a Strut clamping bolt 13b Nut 13c Washer arm 14a, 15a Tightening bolts 14b, 15b Nuts 14c, 15c Washers 16a Band connecting bolts 2 Posts 3 Arm members 4 Pedestrian lamps 5 Marking plates 51 Lamp mounting brackets 52 Marking plate mounting brackets 53 Suspension brackets 54 Support rods 55 Free bands 56, 57 Anti-rest bracket 6 Vehicle lamp

Claims (1)

An arm mounting bracket for mounting an arm member on a substantially columnar or cylindrical column,
A pair of metal fitting bodies attached to both side surfaces of the base end of the arm member, each having a strut-facing edge that abuts against the outer peripheral surface of the strut, and
One end is connected to the pair of metal fittings, and the other end has a pair of tightening bands that are tightened by a column tightening bolt.
Each of the pair of metal fittings includes an upper side surface, a lower side surface, and a relay side surface between the upper side surface and the lower side surface, and the longitudinal direction of the arm member is sandwiched between the opposing relay side surfaces. The radius of the inner peripheral surface of the plurality of bolt holes on each relay side surface where the bolt holes on the side close to the column are provided is fixed by tightening with the arm tightening bolts through the bolt holes. While the radius is smaller than the predetermined radius of the outer peripheral surface of the member, the radius of the inner peripheral surface of the portion where the other bolt hole is provided is substantially the same as the predetermined radius of the outer peripheral surface of the arm member, and is closer to the column. A dent that is raised so as to be separated from the outer peripheral surface of the arm member is formed around the bolt hole,
A plurality of corners are provided on the strut-facing edges of the upper and lower sides of the pair of metal fittings. When the brackets are attached to the struts, the corners abut against the outer periphery of the struts. Arm mounting bracket characterized by contact.

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